package com.itheima.service;



import com.itheima.pojo.Member;

import java.util.Map;

public interface MemberService {
    Member findByTelephone(String telephone);

    void add(Member member);

    Map getMemberReport();

    Map getMemberReportByDateRange(String startDate, String endDate);

    Map getMemberReportByAge();

    Map getSexReport();
}
